Ethoxycarbonyl nitrene, generated by the photolysis of ethyl azidoformate (I), were inserted preferentially into the α C–H bonds of cyclic ethers. The α C–H bonds of cyclic ethers were much more reactive than the corresponding C–H bonds of hydrocarbons for the insertion of the nitrene. In addition, the reactions in cyclic ethers with an alkyl group at the α-position gave unsaturated alkoxyurethanes
Summary of the Invention
Organic phosphoric acid ester derivatives of the formula
wherein
Rrepresents alkyl,
R1represents alkyl,
R2represents alkyl, alkenyl or alkynyl,
R3represents alkyl or aryl,
Xrepresents an oxygen atom or a sulfur atom and
Yrepresents an oxygen atom, a sulfur atom or 〉N―R4,
in which
R4represents alkyl,
provided that in the case in which Y represents 〉N―R4,
then R3 represents alkyl,
and their use as insecticides and nematicides.
Apparatus and methods for the attachment of materials to polyurethane foam, and articles made using them
申请人:Detert W. James
公开号:US20050003178A1
公开(公告)日:2005-01-06
One aspect of the present invention relates to a laminated foam product, wherein the adhesive binding the foam to the laminate comprises the mixture from which the foam is made. Another aspect of the present invention relates to methods for making a laminated foam product. A third aspect of the present invention relates to an apparatus for making a laminated foam product.